.case_inner {
    padding: 50px;
}

.case_img img {
    width: 200px;
}

.case_details {
    margin: 0 1em;
}

.case_details h2 {
    border-bottom: dashed 2px #525252;
    margin: 0;
    padding: 0 1em;
    font-size: 1em;
}

.case_details p {
    font-size: .85em;
}

.case_details table {
    font-size: .85em;
}

.bookends {
    position: relative;
    border-width: 5px;
    border-color: hsl(0, 0%, 50%) transparent;
    height: 11px;
    border-style: double;
    width: 20%;
}
.bookends:before,
.bookends:after {
    position: absolute;
    bottom: -3.536px;
    width: 7.071px;
    height: 7.071px;
    display: block;
    border-width: 0 7.071px 7.071px 0;
    border-color: hsl(0, 0%, 50%);
    border-style: double;
    box-sizing: border-box;
}
.bookends:before {
    transform: translateZ(0) rotate(-45deg);
    left: -21px;
}
.bookends:after {
    transform: translateZ(0) rotate(135deg);
    right: -21px;
}

.pc_area{
    display:block;
}
.phone_area{
    display:none;
}

/*-- スマホ版表示CSS  --*/
@media screen and (max-width: 768px){

    .case_inner {
        padding: 1em 0;
    }
        
    .case_img img {
        width: 100px;
    }

    .pc_area{
        display:none;
    }
    .phone_area{
        display:block;
    }

    .case {
        width: 100%;
        min-width: 100%;
        padding-bottom: 100px;
    }
}